If you register, you can do a lot more. And become an active part of our growing community. You'll have access to hidden forums, and enjoy the ability of replying and starting conversations.

UP 4014

Discussion in 'International Heritage Railways/Tramways' started by athelney, Jul 23, 2013.

  1. Dunfanaghy Road

    Dunfanaghy Road Well-Known Member

    Joined:
    Oct 9, 2019
    Messages:
    1,252
    Likes Received:
    1,566
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Alton, Hants
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Thanks Tom.
    Definitely collar work, then.
    Pat
     
  2. guycarr360

    guycarr360 Part of the furniture

    Joined:
    Oct 4, 2005
    Messages:
    4,414
    Likes Received:
    2,729
    Gender:
    Male
    Location:
    Chester le Street County Durham
    It should be pointed out that the run took place with Roller Bearing equipped Rolling stock, and one of the big hurdles to overcome in operation was treating the rolling stock with sufficient respect until everything truly warmed up.

    Another example is here as UP844 helps rescue a stalled freight.



    When asked about "how much", they could hang off the drawbar of 4014, Ed Dickens looked over at a freight yard in Sacremento, and said, all of that!!!
     
    stuarttrains likes this.
  3. Enterprise

    Enterprise Part of the furniture

    Joined:
    Sep 9, 2005
    Messages:
    5,275
    Likes Received:
    3,077
    Altitude has very little effect on the power output of a steam locomotive except in poorly designed boilers the mass of air available for combustion could be reduced enough to limit steam production and superheat temperature.
     
  4. mdewell

    mdewell Well-Known Member Friend

    Joined:
    Mar 23, 2005
    Messages:
    1,653
    Likes Received:
    2,564
    Occupation:
    UK & Ireland Heritage Railways Webmaster
    Location:
    Ruabon, Wrexham
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    But on the other hand, reduced atmospheric pressure will mean a lower boiling point for water (93 degrees at 6,000 feet). Whether that would completely counter balance the above point I have no idea but in theory it should help.
     
  5. Jamessquared

    Jamessquared Nat Pres stalwart

    Joined:
    Mar 8, 2008
    Messages:
    26,099
    Likes Received:
    57,412
    Location:
    LBSC 215
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    No it won’t, because the boiler pressure controls the temperature of the water in the boiler.

    Tom
     
    mdewell likes this.
  6. mdewell

    mdewell Well-Known Member Friend

    Joined:
    Mar 23, 2005
    Messages:
    1,653
    Likes Received:
    2,564
    Occupation:
    UK & Ireland Heritage Railways Webmaster
    Location:
    Ruabon, Wrexham
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Doh! :Facepalm:
     
    Jamessquared likes this.
  7. guycarr360

    guycarr360 Part of the furniture

    Joined:
    Oct 4, 2005
    Messages:
    4,414
    Likes Received:
    2,729
    Gender:
    Male
    Location:
    Chester le Street County Durham
    The best clip to date...
     
  8. Martin Perry

    Martin Perry Nat Pres stalwart Staff Member Moderator Friend

    Joined:
    Apr 15, 2006
    Messages:
    16,510
    Likes Received:
    7,753
    Location:
    1012 / 60158
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Only when its in a free volume, not when its contained ... like in a boiler.
     
  9. guycarr360

    guycarr360 Part of the furniture

    Joined:
    Oct 4, 2005
    Messages:
    4,414
    Likes Received:
    2,729
    Gender:
    Male
    Location:
    Chester le Street County Durham
    Some nice pieces on youtube have just appeared, as the recent 2 month tour came to completion.

    Now safely locked up for 2019, a year that saw the unthinkable happen, and a big boy steam again.

     
  10. 30854

    30854 Resident of Nat Pres

    Joined:
    Mar 8, 2017
    Messages:
    12,172
    Likes Received:
    11,493
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Brighton&Hove
    Heritage Railway Volunteer:
    No I do not currently volunteer
    Just like a closed lorry carrying live chickens weighs the same even if they're all having a flutter at the same time!

    I do recall some Andean railways needing to upgrade from their first diesels, which were pretty much HP for HP equivalents of the steam locos the were intended to replace. The thin atmosphere at high altitudes has a marked negative effect on the power output of normally aspirated IC engines .... witness all piston engined aircraft have much lower 'ceilings' than jet planes (or rocket powered craft for, that matter).
     
  11. guycarr360

    guycarr360 Part of the furniture

    Joined:
    Oct 4, 2005
    Messages:
    4,414
    Likes Received:
    2,729
    Gender:
    Male
    Location:
    Chester le Street County Durham
    BTW mileage for its first year is calculated to be just short of 11,000, for her 2 circular trips.
     
  12. Martin Perry

    Martin Perry Nat Pres stalwart Staff Member Moderator Friend

    Joined:
    Apr 15, 2006
    Messages:
    16,510
    Likes Received:
    7,753
    Location:
    1012 / 60158
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    True, but there are were very few normally aspirated IC engines designed to work at Altitiude; they were all supercharged or turbo-supercharged. The Spitfire PRXIX could evade the Messerschmitt Me262 jet at altitude by dint of its superior service ceiling (43500ft vs. 37500ft)
     
  13. guycarr360

    guycarr360 Part of the furniture

    Joined:
    Oct 4, 2005
    Messages:
    4,414
    Likes Received:
    2,729
    Gender:
    Male
    Location:
    Chester le Street County Durham
    And this has what to do with UP4014???
     
  14. marshall5

    marshall5 Well-Known Member

    Joined:
    Oct 26, 2010
    Messages:
    2,375
    Likes Received:
    3,981
    Location:
    i.o.m
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    See posts 320 - 326.
     
    Martin Perry likes this.
  15. osprey

    osprey Resident of Nat Pres

    Joined:
    Oct 3, 2007
    Messages:
    9,356
    Likes Received:
    2,313
    Occupation:
    semi-retired, currently doing R&D for my patents
    Location:
    Halifax
    Both have wheels....
     
    Haighie and 240P15 like this.
  16. guycarr360

    guycarr360 Part of the furniture

    Joined:
    Oct 4, 2005
    Messages:
    4,414
    Likes Received:
    2,729
    Gender:
    Male
    Location:
    Chester le Street County Durham
    Back on track then...

     
    60525 likes this.
  17. guycarr360

    guycarr360 Part of the furniture

    Joined:
    Oct 4, 2005
    Messages:
    4,414
    Likes Received:
    2,729
    Gender:
    Male
    Location:
    Chester le Street County Durham
    Classic thread drift on NP....
     
  18. guycarr360

    guycarr360 Part of the furniture

    Joined:
    Oct 4, 2005
    Messages:
    4,414
    Likes Received:
    2,729
    Gender:
    Male
    Location:
    Chester le Street County Durham
    Ed Dickens has recently given a talk about the restoration of 4014

    It is over and hour long, but gives an interesting insight into the restoration and operation.

     
    240P15, osprey and Sheff like this.
  19. 5944

    5944 Resident of Nat Pres

    Joined:
    Jan 14, 2006
    Messages:
    8,031
    Likes Received:
    7,605
    Gender:
    Male
    Occupation:
    Train Maintainer for GTR at Hornsey
    Location:
    Letchworth
    Heritage Railway Volunteer:
    No I do not currently volunteer
  20. guycarr360

    guycarr360 Part of the furniture

    Joined:
    Oct 4, 2005
    Messages:
    4,414
    Likes Received:
    2,729
    Gender:
    Male
    Location:
    Chester le Street County Durham
    5944 likes this.

Share This Page